Camber-measuring device



May 14, 1929. A, "s, NOX 1,712,889

CAMBER MEASURING DEVI CE Filed Dec. 5, 1927 Sill Patented May 14, 1929.

UlTED STATES ilitttfl .tlrldilllE-IUIR S. KNOX, 0F GLENDALE, CALIFORNIA, ASSIGIQ'OPJ, BY 'MESNE ltfifillbihlllrllllliltllllfl, TO E. RICHARD JUST.

GAMBEE-MEA$URING DEVICE.

Application filed December 5, 1927.

This invention relates to camber measuring devices.

As is well known, it is the common practice to incline the trout wheels of a motor vehicle lrou'i the vertical to pro] erly pl co the load with respect to the king bolts of the wheels, and the present invention contemplates novel means :t'or measuring the inclination or careber of the wl'ieels.

rru important object of the invention is to provide a body adapted to be vertically arranged adjacent one of the front wheels of the vehicle and provided with relatively movable means adapted to contact with the wheel whereby the inclination oi? the latter may be determined.

it turther object is to provide a device of the character referred to wherein the body is provided with means for indicating when it :is in a true vertical position whereby the positionoit the relatively movable uiicinbers will indicate the camber of the wheel.

ll. further object is to provide novel electromagnetic means for retaining the device in position on the wheel.

it further object is to provide a body portion adapted to be substantially vertically arranged and having electromagnetic members associated therewith and vertically slidable thereon to permit them to be adjusted according to the diameter of the wheel, one ot the electromagnetic members having a laterally slidable camber measuring mom or associated therewith.

Uther objects and advantages of the invention will become apparent during the course of the tollowing description.

V in. the drawings l have shown one cmbodi ment of the invention. In this showing,

Figure l is an edge view Figure- 2 is a side elevation and,

Figure 3 is a detail section. on line 3-3 of Figure 1;

teilierring to the drawings, the numeral 10 designates the body portion of the device which may be formed of suitable square, round or si milar metal stock. The ends of the body portion are arranged in alineinent with each other as shoivn while the central portion ll is ollset so as not to interfere with the hub of the wheel, as will be obvious. -The body is provided with suitable spirit levels 12 and 13 which permit the body to be arranged accurately in a vertical position when the device is in operation. Slides 14 and 15 are Serial No. 533?,8813.

ar auged on the opposite ends of the body, each of thee 1 slides being provided with a slet 16 through which the end portions of the body extend. The thumb screw 17 is associated with each slide to clamp it in selected positions on the body. l lac-ll of the slides eon stitutos the core oi. an electroanagnct l8 ada ited to be supplied. with current tl'irough wires 19 these wires leading to an attachment plug 20 ct any desired kind.

The slide or core Ll is preferably integral and obviously is tired against lateral movement with respect to the body 1.0. The slide is provided in one end. with a recess ill slidably receiving the shank 22 ot a contact member 23, the later member and its shank forming a continuation of the core with which it is associated and adapted to be n'iagnetically energized when current is 111 seed through the coil 18. A set screw 24; is adapted to retain the shard; 22 in position and the shank is pro vided with suitable i n dicia 25 preferably calibrated in inches and :l'ractions thereof.

The operation of the device is as follows:

The set screws 1'? are loosened. and the slides are moved on the body until the inner ends thereof: are spaced apart a distance equal to the diameter of the metal telly oil the wheel. The set screws referred to are then tightened whereupon the electro-maguets are enei d. The contact member E23 and the inner end of the core ll; are then placed. against the top and bottom portions of the telly, the cores acting as electro-magnets to support the device in position flhe thumb screw 5 24; is loosened and the body is moved in any direction until. the spirit levels indicate that the body is accurately arranged in vertical position. The thumb screw 24; then tightened, and the camber or degree or inclination of the wheel is indicated by the calibrations ll? will be apparent that the electromagnetic means described operates at fieiently to support the device in position while the measuring opera tion is taking place, and the camber oi the wheel. readily may be determined. The device may be detached from the wheel merely by disconnecting the plug 20110 deenergize the electro-inagnets.

It is to be understood that the term of the inventiol'i herewith shown and described is to be taken a preferred example of the same. and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the in a vertical position, and means for indicating the position of said movable element with respect to said body.

2. Adevice of the character described comprisingv a body having alined end portions adapted to be vertically arranged adjacent a Wheel mounted upon a vehicle, a pair of magnetic cores carried by said end portions and projecting laterally therefrom, coils surrounding said cores, one of said cores being provided in its QIIClWltl] an axial recess, and a contact member slidable in said recess, the end of said member and the end. of the other core being adapted to engage and remain in position againstdian'ietrically opposite portions of the Wheel, the portion of said contact member which is slidable in said recess being provided with a scale.

3. A device of the character described comprising a body having alined end portions 7 and a laterally ofi'set central portion, a pair of cores provided with slots slidably receiving the end portions of said body, means for retaining said cores in selected positions on said body, a coil surrounding each of said cores, oneof said cores being provided with an axial recess, a contact member having a shank slidable in said recess, means for securing said shank against movement, and a scale carried by said shank and coaeting with the adjacent end of the corrcspmiding core, said Contact member and the end of the other core being adapted to engage diametrically opposite portions of a wheel mounted upon a vehicle.

A device of the character described comprising a. body having alincd end portions and a laterally otlset central portion, a pair oi? cores each provided in one end with a slot slidably receiving one end portion of said body, means for retaining said cores in selected positions on said body, said body being adapted to be vertically arranged adjacent a wheel mounted upon a vehicle, a pair of spirit levels carried by said body and arranged at right angles to each other, a coil surrounding each of said cores, one ot said cores being provided with an axial recess, a contact member having a shank slidable in said recess, and a scale carried by said shank andcoacting with the adjacent end of the corresponding core, said cont act member and the end of the other core being adapted to engage diametrically opposite pm-tions of the Wheel.

In testimony whereof I affix my signature.

ARTHUR S. KNOX. 

